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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 163 |
| 3 | 2803 |
| 4 | 3565153 |
| 5 | 210344143 |
| 6 | 86915972211813115391953 |
| 7 | 4419764102942908730796303703 |
| 8 | 114681479899746991802547357477494803 |
[13,163,2803,3565153,210344143, 86915972211813115391953, 4419764102942908730796303703, 114681479899746991802547357477494803] |